Electric lock



Ns Model.) l @heats-sheet 1. P. S'. HOLMES.

ELECTRIC LOCK.

1\To.'46'7,465.v Patented Jan. 1,9, 1892.

YHE Noms Pinus ca, FnoTo-Lmfo.. wAsNmurQn, o, c.

(No Model.) 4 Sheets-Sheet 2.

I'. S.. HOLMES .BLEGRIG LOCK. No. 467,465.l Patented Jan. 19,1892.`

(No Model.) 4 ehee'mssnee#J 1f'. S. HOLMES. ELECTRIC LocK.

No. 467,465. Patented JM.l 19, 1892.

VM* |||||UlA il mi Illllll l '1 me nomma Patins co. Fuero'u'rna, wA'smNaran, u. cV

4 Sheets-Sheet 4.

(No Model.)

P.. s. yHOLMES.

ELECTRIC LOCK.

Patented Jan. 19, 1892.

MINIMUM,"l f

i UNITED STATES PATENT OFFICE.

FREDERICK S. HOLMES, OF BOSTON, MASSACHUSETTS, ASSIGN OR TO JAMES lV. TORREY, OF PHILADELPHIA, PENNSYLVANIA.

ELECTRIC LOCK.

SPECIFIATION forming part of Letters Patent No. 467,465, dated January 19, 1892. Application led February 3, 1891. Serial N0. 380.018. (No model.)

To aZZ whom it 11i/ay concern: detail in plan view to enable the operation of Be it known that I, FREDERICK S. HOLMES, the transmitting apparatus to be more readof Boston, county of Suffolk, State of Massaily understood; Fig. 17, a detail, on an enchusetts, have invented an Improvement in larged sc`ale, of a portion of the lock mecli- 55 5 Electric Locks, of which the following descripanisrn to more clearly show the tu mbler-brake tion, in connection with the accompanying and the devices for operatingit; Fig. i8, a dedrawings, is a specication, like letters and tail of the tumbler-brake shoe; Fig. 19, a diagures on the drawings representing like gram of circuits shown, the transmitting apparts. l paratus and the magnets for operating the 6o Io Thisinvention relates to apparatus bywhich same arranged in series; and Fig. 20,a detail a combination-bolt or other locking mechanof the form of circuit-breaker employed with ism employed on safes, vaults, and other dethe series arrangement of circuits shown in positories for valuables may be electrically Fig. 19. controlled at any given point or station, and Referring to Fig. l, the case A, preferably 65 r 5 has for its obj ect to improve the construction of metal, contains within it preferablya polarof the electricallycontrolled lock and the ized electro-magnet consisting of two coils a mechanism by which the said lock is opera', provided with an armature a2, pivoted, as ated. at a3, to a plate or bar a4. The armature a2 is The particular features in which myinvenprovided at or near its opposite end, as herein 7o 2o tion consists will be pointed out in the claimsA shown, with studs or pins a5 ct"`,which engage at the end of this specification. lugs or ears al ason pallet-bars a9 aQ, pivoted,as Figure l is a front elevation of an electriat a12 a13 to the plate or bar a4. The pallet-bars cally-controlled lock embodying my invena9 al@ are provided at their upper ends with tion, the face-plate or cover of the lock being 4fixed pawls a L15 and have pivoted to them, as 7 5 2 5 removed and the said lock connected toasuffiat am a, movable pawls als c, provided, as

cient portion of the bolt-operating mechanism herein shown, (see Fig. 2,) with enlarged porto enable the operation of the lock to be readily tions d20 am, constituting weights for the said understood; Fig. 2, a detailin elevation, on an pawls to normally keep them in engagement y enlarged scale, of a ratchet-wheel and the with ratchet-wheels b b', having oppositely- 8o 3o pawl to operate the same; Fig. 3, a side eleinclined teeth, one pawl, as als, being in envation of the pawl shown in Fig. 2, looking gagement with the teeth of one wheel, as b, toward the right; Figs. 4 and 5, details to be. and the Other pawl aw with the teeth of the referred to; Fig. 6, a detail, on an enlarged other wheel, as b. The pawls as am are proscale, of the tumbler-locking lever, to be revided, as herein shown, with lugs or ears L22 85 35 ferred'to; Fig. 7,a side elevation of the lever CLS, which co-operate with stops or pins a2'L shown in Fig. 6; Fig. 8, a top or plan view of L25 on the pallet-bars to limit the downward the tumblers and the wipers or brushes conmovement of the said pawls. The ratchetnected thereto; Figs. 9 and l0, details, on an wheels b b are secured together or are made enlarged scale, to Inore clearly show the conas a single disk having two sets of oppositely 9o 4o struction of the tumblers and their co-perinclined peripheral teeth, so that the said ating brushes; Figs. ll and 12, details of a ratchet-wheels move simultaneously. The modified form of brush-operating mechanism; ratchet-wheels are mounted on a stud or post Fig. 13, a detail to be referred to; Fig. 1i, a on the plate a4, the said post being provided diagram of circuits to more clearly show the with a screw-threaded socket, into which is 95 45 operation of the mechanism, the transmitting inserted a set-screw b2, which serves to fasten apparat-us being shown in elevation and seca locking-lever b3 for tumblers b4, loosely tion and the mechanism for operating the mounted on the said studvo'r post, (see Fig. 8,) transmitter being shown in plan View, the there being four tumblers herein shown, and circuit-breaker or commutator being in mulmarked, respectively, 2 3 l 5 in Fig. 8. roo

5o tiple arc with the motor and brake-magnet; The tumblers b4 may be of any usual or Fig. l5, a detail to be referred to; Fig. 1G, a well-known construction, such as commonly used on combination-locks, they being provided on one side with a substantially circular groove b and on the other side with a projection, (not shown,) which in practice enters 5 the groove h5 of ,an adjacent tumbler and is adapted to move said adjacent tumbler when the said projection is brought into engagement with a shoulder D7 in said groove, the said shoulder in the present instance being shown as alug on a ring bx, the said ring and lug tting loosely in the groove b5 and the lug h2 adapted to play between two shoulders 192x. The tumbler h1 (marked 5) is irmly secured to the ratchet-wheels b b', to be moved simultaneously therewith. The tumblers 191 areI provided on their periphery with contactplates h20preferably set into the said tumbler to-be flush therewith. (See Fig. 9v.) The contact-plates Z950 on the tumblers have co-operati-ngw'ith them two sets hs b2 of contact pens or brushes secured to movable insulated supports, herein shown as hollow sleeves Z210 Z912, of insulating material,secured to the plate or bar d4 by screws or rods 512,- threaded at their lower ends. The hollow insulating-sleeves Z910 Z112 are loose on the rods 512 and are made movable thereon to engage and disengage the contact-brushes?)8 h2, with the contact-plates on the tumblers, preferably by means of studs Z914 Z315, eccentrically placed on ears 19161917 on the under side of the lever 3, the said lever being piv1 otally mounted on a pin or shaft,(not shown,) but which is extended through the ears o16 b and through a hub/Z212, secured to or forming part of a post (not shown) fastened to the plate or bar a4. The eccentric studs or pins Z914 1915 enter slots extended in the direction of thele'ngth of the sleeves, so thaty by lifting the lever h3 from the position shown in Fig. 1 to onasub'stantially at right angles thereto the sle vves h1@ Z912 will be revolved on the rods Z912 in i Fig. 9, remove the contactbrushes b2 b9 from their co-operating contact-plates on the HM 'tftmblers thereby breakngvthe electric' Cir' cuit at thetumblers and at the same time permitting the said tumblers to be removed from their stud or post or to be revolved thereon by hand. l

Instead of revolving the insulating-sleeves b1 b12 to remove the contact -brushes from their co-operating contact plates, the said sleeves may be moved bodily toward and from the tumblers, they being each provided with a slot h2o, (see Figs. 11 and 12,) through which isL extended'two pins or rods 631 Z332, upon which the sleeves slide when the lever h2 is turned on its pivot. The case A also contains within it an auxiliary' magnet cx, connected, as by wire 56,' in circuit with the contact-brushes hs b9, the said electro-magnet being herein shown as provided with a dovetailed base c, fitted into a-dovetailed slot in the bottom of the case A. The electro-magnet CX has co-operating withy it an armature c', secured to or forming part of an arm c2 of a bolt-controlling lever C, pivoted, as at c2, in suitable lugs direction indicated by arrow 20,

c4 on the under side of the top of the case A, The lever Chas an arln c5 extended down within the case A, and an arm c6 extended through a suitable slot or opening in the top of the said case. The arm c6 is herein shown as provided at its upper end with a slot or opening c2, into which is extended a pin cS on a lever C9, pivoted as at 010, the lever 010 cooperating with and forming part of a boltcontrolling mechanism consisting, as herein shown, of a pivoted cam or plate C12, provided with an arm Z5 to engage a shoulder26 on the lever ci and with an arm 27, having a shoulder 28, which is normally engaged by the end of a compound lever consisting of a lever C13, pivoted as at 014, and having one arm provided with a slot c15,in which moves a pin or stud o16 on a lever 017, pivoted as at 012. The lever C13 has co-operating with it a lever C19, pivoted as at 020, and the lever 0:17 engages a shoulder 021 on a bar or rod 022, forming part of the bolt mechanism.

In practice the bolt mechanism C22 is usually placed in operative position (indicated by full lines, Fig. l) immediately after the `door of the vault or receptacle is opened. This is accomplished in usual manner by means of aV pinion and rack-bar, and being of such ordinary construction and not forming any part of my present invention they are not herein shown.

When the door is closed and the combination-lock is set, the parts shown in Fig. l occupy the position indicated by dotted lines, the bolt-operating bar 022 being supported by the lever C17, the lever C13 being held in its dotted-line position by the lever 021, the camplate 012 being engaged by the lever 012,- and the shoulder 26 of the lever c2 being engaged by the arm 25 of the cam-plate 012.

The electrically-actuated lock has co-operating with it a transmitting or actuating mechanism, which in practice may be located at any desired place or station outside of the safe or vault. The transmitting mechanism consists, as herein shown, of a pointer d, (see Fig. 14,) registering with a dial (Z, provided with graduations equal in number to the'number of teeth on the ratchet-wheels of the electrically-actuated lock. The pointer (Z is fast on a shaft d2, having mounted thereon a gear cl2. (Indicated by dotted lines, Fig. 14.) The gear Z3 meshes with a pinion d4 on a shaft d5, having mounted on it a gear OZ6 in mesh with a pinion cZ7on a shaft d8, upon which is mounted a commutator or circuit-breaker d, the said commntator having co-operating with it brushes Z111 C112, to which circuit-wires cZ12 Z11 are respectively connected. The shaft OZB has mounted on it a gear cZ15 in mesh with a pinion d on a shaft provided with a gear CZ19 in mesh with a pinion d20 on the armatureshaft CZ21 of an electric motor of any usual construction, but preferably having its fieldmagnets composed of soft-iron cores @Z22 @Z22 and coils (Z24 Z25 wound'thereon. The armature-shaft @Z21 has mounted on it a disk @Z212 IOO IIO

The contact-arms 610 @12 may be brought into forming partici' an electrical-brake mechanism, the co-operating part of which is a lever (127, provided with an armature 12S for an electro-magnet dii. The armature-shaft C121 has mounted on it a commutator also of any usual construction, with which co-operates brushes (X31 (F2, mounted upon suitable insulating-supports CX33 di. Y

The operation of the electric motor is controlled by a suitable switch or pole-changer, herein shown in Fig. 14 as a drum e, of insulating material, mounted on a shaft e', supported in uprights e2 on a suitable base or support, the said drum having secured to it near its opposite ends contact-strips e4 e5, extended substantially around the circumference ot the drum, as indicated by dotted lines, Fig. 15. The contact-strips e1 e5 have co operating with them, as shown in Fig. 14, two sets of contact-brushes e6 e8 e7 e9, and the said strips are provided, as herein shown, with contact-arms @10 @12, extended, as shown, substantially at right angles to the contact-strips et1 e5. The arms e111 @12 have co-operating with them two sets of contact-brushes e13 @15 e11 e1. rlhe drum normally occupies` the position shown in Fig. 14E, with the contact-brushes @13 615 @11 e out of contact with the arms e10 @12.

contact with the brushes e11 e1 or with the brushes @13 e15 by revolving the drum e irst in one direction, as indicated by the arrow 20, or in the opposite direction by means of pushbuttons @18 e1, having co-operating with them rods @20. Only one of such is shown in Fig. 15, provided with slotse22, fitted over crank pins or studs @23 @24 on the ends of the drum e. The pins @23 @24 are set on opposite sides of the center. Each rod e2@ is extended up into its push-button and is provided with a collar c25, which rests upon the bottom of the pushbutton when the drum is in its normal position. The rod ci() within its push-button is encircled by a spring e2?, which acts against the collar c25 and brings the drum e toits normal position. (Shown in Fig. 14.) The upper end of the rod e211 does not extend to the top of the push-button,but is removed therefrom a suiiicient distance to allow of the upward movement ot' the said rod when the latter is raised by the movement of the drum to com'- plete the electric circuit. Each rod e2@ at its lower end is extended through a suitable guide e30. (See Fig. 15.)

, 'lhecontact-brushes e e8, as shown in Fig. 14, have connected to them the positive and negative wires 50 5l of a dynamo, battery, or other generator. (Not herein shown.)

The brush e14 is joined by Wire (Z13 to the contact-brush d10, co-operating with the commutator C19, and the other brush C112 by wire d to one end 55 of the coil of the polarized electro-maguet, and to one end 54 ofthe coil of the auxiliary magnet 0X. The other end 56 of the auxiliary magnet-coil is connected to the contact pen-or brush bs, which cooperates with the tumbler marked 5, (see Fig. 8,)

yand thecontact-pen 118, co-operating with the tumbler marked 2, is connected by wire 57 to the brush @16. The wire 57 has joined to it the opposite end 5S of the coil of the polarized electromagnet. The brush @13 is connected by wire 59 with the brush e111, and the brush @15 is joined by wire GO to the brush e111 The brush e1 is connected by wire 6l to the commutator-brush CP1, and the other commutatorbrush 6332 is connected by wire 62 to the brush e9. The brush @16 is also connected by wire 64 to the field-coils d2* of the electric motor, and the other ends 65 of the field-coils are joined to the end of the coil of the brake-n1ag net clin, the other end 66V of the said magnetcoil being connected to the wire CX13. The brake-lever cl27 is normally kept in engagement with the brake-wheel Z211 by a spring 69.

When one push-button, as @13, is operated, the pointer CZ will be rotated in one directionas, for instance, toward the rightand when the button 619 is operated the pointer will be revolved to the left, and consequently I have, for sake of distinction, marked the said buttons in Fig. 16 right and left 1When the push-button @1S is depressed, the drum is revolved until the contact arms 610 e1'2 are brought into engagement with the brushes @14 e1, at which time the circuit through the polarized electro-magnet is completed, the said circuit being traced in Fig. 14. as follows, viz: positive wire 50, brush e, contact-strip e1, contact-arm 610, brush 614, from which point two paths are open to the current-one by wire G6 through brake-magnet d2, energizing it and IOO attracting the brake-lever CX21 away from its brake-wheel CPG; thence by wire 65 to fieldmagnet coils (P1 (P5 of the electric motor; thence by wire Get to contact-brush e1, convtact-arm @12, strip e5, brush es, and negative `wire 51 to the negative pole of the generator.

The other path from the brush e111 is as follows, viz: wire C113, pen d10, conducting-segment of the commutator d1), pen 112, wires E14 53, through the coils a a of the polarized electromagnet, wire 58, wire 57, to brush ew, and thence as described to the negative pole of the generator. The current passing through the coil a and then through the coil a will cause the coil d to attract the armature a2 and rotate its ratchet-wheel in the direction indicated by arrow 40, Fig. 1, and thus rotate `the tumbler marked 5 until the projection on the said tumbler strikes the shoulder on the next tumbler. i/Vhen the pointer CZ has been revolved to the required graduation, the push-button 61S is released and the push-button e1 pressed upon to revolve the drum e in i the direction opposite to that indicated by arrow 20, thus bringing the contact-arms @10 912 into engagement with the brushes 613 @15. The circuit may then be traced as follows, viz: the positive wire 50, brush e, contact-arm ew and brush e111, wire 59, to contact-brush e111,

from which point two paths are open for the i IIO current, Viz: one by wire 64E through the iieldi.

magnet coils C121 C225 of the electricniotoigwire tatiana-magnet @en de, wir@ campana@ @15; thence by arrn 612; contactbrush es, and' negative wire 5 1 to the negative pole of the generator. The other` path for the current from the` contact-brush el? may be. traced follows, ViZ: by wires? 5 8 tliroughithe c i l`sv rent passingthrough the coil @tot the A,polarized electro 'fagn'etcauses the', said coil to attract the armature c? and' noye the' ypa hat @te rotate the retener-'what e0-opent; ingvtith the p awl als in adirec'tion opposite to that in'd'i'' v tedfbyiriiwfl); l i t The pushbutton 619 isoperatedtounai` uleioseueirenattheswiten gr pieenangeif anni tnepimer dnas been mated @o niedesired oi' required g'faduatien on thedial d.

The operaton Iirst closes the circuit` by meansofthe'push-buttonelsand the Witn the" n'f 021s'- eompletedfrointh wir@ 51' thr thefpensgA bjf and the 4conductiiigls111i"i"a` t c the tiimbles to: the pen' to whichthe wife. 56 ot the auxiliary magnetislonnectdlthec'urrerit"p assin@through the said auiliary lnafe described, the said magnetattiacts its'fai'rna:

turecf andJnoyes vthe lever C onfitfs pivot ftomi dttedjtb its"funln@position; niet@ by removing the tOGZG'Of the lgvi 09.911@ pf engagement with the arm" 25 of the' cani-plate C1? (se'elg 1) andzpermitting thelbo lt-eicel"- ating bai' 022 to descend by gravityfand unlccjliy the bns, the Said bat in its deseentptning the lever, c17 on its pivot from the position indicated" by dotted linesv to that iniic'ateuby fnlllinGS'Q the pin or st .nd'cl6 on the said leven trayeling'up in the Slot C15 and"Curlirigt the lever lcl3 into its full-lineposition. The lever cl3 actsonfwthe arm emot the cani-plate and turns'the'l said plate on its pivotinto its f'ull'- line position'.l l V In prac t'iscustoin'ayto raise the bolt-L operati'nfg bai' c2? i'mniediately after the safedooi has'beenopened, and in order that .the

bolt-'operating' mechanism may not be locked:

While 'the bolt 'mechanism'is in operativ@13,07v

sition, until itis desired to slilockthe sanne, the leverv C has co-operating' with it a locking device which retains the Vsaid lever inf iftsf'ull-y lineA position untilit is desired to lock' the safe. i v

l. The ckisdeierasslwn 'lFig l, @01.1- ysists'of a leyenn; piyotedfas .at @'{and pro-v vided with forks/rt2 n3, between which. `iscritended'thfe end of the arm c5 of the leveijC, rlhe lever n lat its opposite en d has securedto it a spring gt4, (seebFi'g', 2.,) which act-s upon a pinV or stud if, extended looselythrough ya hole inthe vend of the leverqn. The pin n? cooperates with al cam or projection fnon the `pall et-baa?,V` When the circuit ofthe vauX- iliary magnet cX is completed and the boltope'rating1 ineclajlfisniy has been released to `open thes'affe; the anni@ acts upon the. forks Vnand turns the lever into its 4 position shown inl Fig. .1, sc that thepin nyyilhconle ni,.1f ,wih the-:trojan fr.

ton

TOO

.n in series with the niotor and braket i amplifi' are. aange@ misa-realite cincuiti-biealer d will preferably be inadeas showni'n Fig. 20, it consistingof acylindical body in, of in sulatingjmaterialg.,hayng oondu'cting bands orlstripsm m? encircling ithnd 'proyided with lContact-ar'n'ns m4 m5, extendedfrom'l the said bands or strips. The insulatingbodyLj/n has secured to'v it rbe'tween the con tact-afinsv of they conducting strips or `ban ds` m Contact plates or'A piecesV m7, which are respectively connected'by Wires mf? m9 to conducting-rings m10 m12 on extended jourhalsoffthefbody m'. The rings m19 .m13 have co-opeiating with them contact-brushes m13 mljconnected to Isuitable resistances m15, whichare substantially equal to the lresistancev of the lock-magnets and the circuit connecting the circuit-breaker with said lock magnets. The contact-plates m mare insulated from the contact-arms m* m and are used to maintain the circuit of the motor closed vwhen the contact-brushes (Zw i112 are not in contact with the arms m4 m5, and the resistance m15 is interposed at such time to prevent the motor from being burned out.

lith the' parts arranged in series the circuit may be traced as follows, viz., (it being' supposed that the rightpush-button has been operatedz) from the positive wire 50 to the iielddnagnet of the motor, thence by wire m20 to brake-magnet (Z22, wire m21, to brush e6 ot' pole-changer, contact-strip e", contact-brush e, wire m22, to brush (Z22, through the armature ot' the motor, brush di, wire m23, to brush d10, contact-arm m4, band or strip in', contactbrush m21 co-operating therewith, wire 57, polarized electro magnet, wire C114, contactbrush m25 co-operating with the contact band or strip m2, contact-arm m5, brush (i12, wire m26 to brush el ot' pole-changer, contact-arm cl2, strip e5, brush es, and wire 5l.

lVhen in the revolution of the circuitbreaker the contactbrushes d10 e112 are in contact with the plates m6 m7, the lock-magnets are cut out of circuit and the circuit of the motor is completed through. the resistances m15, the circuit through the circuit-breaker being traced as follows, viz: from the positive pole to the brush d10, as described, contact-plates fm, wire m8, ring m10, brush m13, resistances m15, brush mi", ring m12, wire m9, contact-plate m7, brush e112, wire m26, thence, as above described, to the negative pole of the generator.

Vhen the left push-button on the polechanger is operated, the circuit may be traced as follows, viz: positive wire 50, field-coil of the motor, wire m20, brake-magnet d2", wire m21, brush e6, strip e4, arm elo, brush cl3, wire 59, to brush @12, thence by Wire m2, brush (i12, band m2, brush m25, wire C114, polarized magnet in the opposite direction, wire 57, brush m24, band m', brush dl", wire m22, armature-brush dal, armature of motor, armature-brush CX32, wire m22, to brush e, thence by wire 60 to brush 615, strip c5, brush es, negative wire 5l.

In order that the tumblers of the lock may be held immovable after each movement of either of the pallet-bars ai am, I have provided a brake mechanism which is brought into engagement with the tumblers after each demagnetization of the polarized electromagnet, and which is disengaged from the said tumblers by the movement of the pallet-bars effected by the magnetization of the said polarized electro-magnet. The brake mechanism referred to consists, as herein shown, of a shoe nx, (see Fig. 18,) shaped to conform to the periphery of the tumblers and provided on its under side with a stud or post am, vertically movable in a socket in a guide n2, provided with a slot w20, through which is extended a pin wm, the said post or stud being encircled by a spi 1al spring n50, which acts to normally keep the shoe in engagement with the tumbler-s. The pin nl is engaged on its upper side by the arms am) n of levers nsonm, pivoted, as at n10 w12, to the plate a4. The levers nl" 7112 have pivoted to them, at or near their opposite ends, weighted elbow-levers w12 71,1, having arms w15 nl, the arms n.15 of the elbow-lever engaging pins a on the levers 91.20 ngo, and the arms nl being herein shown as beveled on their under side to engage the beveled or inclined upper face of cams or projections als nl on the pallet-bars 0,9 al, so that when either pallet-baris moved forward to engage its pawl with its ratchet-Wheel the lever m m90, operated by the actuated palletbar,will be turned on its pivot anditssmall arm will be depressed, thus forcing the brake-shoe downward out of engagement with the tumblers, leaving the latterfree to be revolved. As soon as the pallet-bar has been moved inward far enough to have the arm nl clear its operat ing-cam the spring n50 moves the brake-shoe up into engagement 'with the tumblers, the long arm of the lever being turned downward and limited in its downward movement by a stop or pin 91,20. 0n the backward movement of the pallet-bar, effected in the present instance by the spring m21, the cam on the said bar strikes the arm nl of the elbow-lever and turns the same on its pivot without moving the lever to which it is pivoted, and when the pallet-bar has regained its normal position the weight on the elbow-lever turns the said lever back into its normal position, with the arm n in engagement with the cani on the pallet-bar-that is, into the position shown in Fig. 17. The levers 17.80 am) and the elbow-levers m13 n form a releasing device for the brake mechanism.

I claim- Y l.V The combination, with an electrically-actuated combination-lock arranged within a safe or other receptacle and comprising a series of tumblers, a ratchet-Wheel to operate them, and an elect1'oinagnet located `in said safe to rotate said ratchet-wheel, of a switch located outside of the safe and connected in circuit with said electro-magnet, an electric generator connected to Said magnet through said switch, a circuit-breaker to control the operation of the said magnet, and an electric motor to produce movement of the circuit* breaker, substantially as described.

2. The combinatiomwith an electrically-actuated combination-lock arranged within a safe or other receptacle and comprising a series of tumblers, a ratchet-wheel to o perate them, and a polarized electro-magnet located in said safe to rotate said ratchet-wheel, of a pole-changer located outside the safe and connected in circuit with said polarized electromagnet, an electric generator connected to said magnet through said poleehanger, a eireuit-breaker to control the operation of the said magnet, andan electric motor to produce movement of the circuit-breaker, substantially as described.

IOO

IIS

The con1bi11atio11,with an electrically-actuated combination-lock arranged Within a safe or other receptacle and comprising a series of tumblers, a ratchet-Wheel to operate them, and an electro-magnet located in said safe to rotate said ratchet-Wheel, ot' a controlling-instrument located outside the safe and consisting of a pole-changer connected in circuit With the said electro-magnet, a circuitbreaker in circuit with the pole-chan ger, a dial, a pointer, and an electric motor, and gearing connecting the said motor with the circuitbreaker and pointer, to operate substantially as described.

4. The combination,with anelectrically-acttuated combination-lock arranged Within a safe or other receptacle and comprising a series of tumblers, a ratchet-'Wheel to operate said tumblers, a main electro-magnet located in said 'safe' to rotate said ratchet-wheel, a bolt-mechanism, and an auxiliary magnet energiz'ed thrugh said tumblers to control said bolt mechanism, of an electric generator, a

pole-changer located outside of said safe and connected to the main electro-magnet, a circuit breaker, and an electric motor to operate said circuit-breaker, substantially as described.

5. The herein-described electrically-actuated com'bination-lock for safes and other receptacles, it consisting of a series of tu mblers, ratchet-Wheels to operate said tumblers, a polarized 'electro-magnet, its armature, palletbars operated by the said armature and provided with pawls to engage said ratchet- Wheels, a brake mechanism to engage said tumblers, and a releasing mechanism operated by movement of the pallet-bars to disengage the brake mechanism from the tumblers,substantially as described.

6; In an electrically-actuated combinationlock, the combination of the following instrumentalities,- viz: a series of tumblers, ratchetwheels to rotate them, a polarized electromagnet, its armature, pallet-bars operated by movement `of said armature and provided with pawls to engage said ratchet-Wheels, a bolt-operating-lever, an auxiliary magnet to operate it, and a locking device to lock said lever, substantially as described.'

7. In an electrically-actuated combinationlock, the combination of the following instrumentalities, viz: a series of tumblers, ratchetwheels to rotate them, a polarized electromagnet, its armature,palletbars operated by movement of said armature and provided with pawls to engage said ratchet-Wheels, a brake mechanism to engage the tumblers, a releasing device for said brake mechanism operated by movement of the pallet bars, a bolt-operating lever, an auxiliary magnet to operate it, and a locking device for said lever, substantially as described.

8. The herein-described transmitting apparatus for electrically-actuated combinationlocks, it consisting of a circuit-breaker, an electric motor, gearing connecting the said circuit-breaker and motor, and a pole-changer connected in circuit with the said motor and circuit-breaker, substantially as described.

9. The combination-,Withan electrically-actuated combination-lock arranged Within a safe or other receptacle and comprising a series of tumblers, a ratchet-Wheel to operate them, and an electro-magnet located in said safe to rotate said ratchet-wheel, of a transmitting apparatus arranged in series with the said electro-magnet and consisting of a circuit-breaker, an electric motor to operate it, a pole-changer, and a resistance normally out. of circuit With the motor When the lock-magnet is in circuit therewith and in circuit with the motor when the lock-magnet is cut out of the motor-circuit, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FREDERICK S. HOLMES.

Witnesses:

BERNICE J. Novus, EDWARD F. ALLEN. 

